Self-filling tire.



HERNANDEZ;

SELF FILLING TIRE.

APPLICATION FILED APR. 20, I9I5.

1 ,200,418. Patented om.. 3,1916.

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@u MH/1Mb @Romana JOSE FERNANDEZ, 0F BROWNSVILLE, TEXAS.

` SELF-FILLING- TIRE.

Specification of Letters Patent.

Patented Oct. 3, 1916.

Application led April 20, 1915. Serial No. 22,655'.

vTo all whom z't may concern Be it known that I, JosE FERNANDEZ, acitizen of the United States, residing at Brownsville, in the county ofCameron and State of Texas, have invented new and useful Improvements inSelf-Filling Tires, of which the :following is a specification.

This invention relates to tire inating mechanism and the principalobject of the invention is toprovide simple and eilicient meansforautomatically iniating the tire by the action of the weight of thevehicle as the same rogresses over the road.

Another o ject of the invention is to provide a device of this characteremploying a pump having a piston actuated by the weight of the vehicleand which is so con.

nected that without springs or other intermediarymechanism it will bereturned to normal position after'every stroke.

Further objects of the invention will appear as the followingdescription is read in connection with the accompanying drawing, whichforms a partof this application, and in which Figure 1 is a detail sideelevation of the wheel showing the apparatus applied thereto. Fig. 2 isa' sectional view taken on the line 2 2 ofv Fig. 1. Fi 3 is a horizontalsectional view taken on t e line 3-3 of Fig. 1 and-looking in thedirection of the arrow.

' Referring more particularly to the drawing, 1 represents an ordinarywheel felly having secured thereto the tire receiving rim 2 in which theordinary clencher shoe or casing 3 is secured. This casing contains theusual inner tube 4 which in this'instance has connected thereto andpassing through the felly and rim in place of the valve an elongatednipple 5 to the outer end of which is secured the thickened bottom 6 ofa pump cylinder 7. The bottom 6 is provided with -a gland collar 8externally threaded to receive the packing washer 9 which bears directlyagainst the outer face of the felly, as

shown, and holdsall parts in operative position. The outer end of thecylinder 7 is closedfby a cap 10 having a thickened central portion 11in which the valve seat 12 is formed. This valve seat communicates withan inlet port 13 which is closed bythe valve 14 and normally held insuch position by the spiral spring 15 surrounding its stem. Covering theenlarged portion or boss 11.is a foraininous cap 16 which contains aquantity of. wire gauze or any other suitable dust collecting material17.

Slidably mounted within the cylinder 7 is a piston head generallyindicated at 18 and consisting of a central plate 19 centrally aperturedand formed with 4the valve seatY to receive the valve 20. 'On oppositesides of the central plate'are arranged packing disks 21 held place bythe plates 22 `and the screws 23 which also connect the piston head witha cross plate 24 of slightly less wider diameter than the diameter ofthe opening 25 immediately above the valve 20; The cross plate 24 hasconnected directly thereto a plunger or piston rod 26 which passesthrough the nipple 5 and has formed on its outer end a ball 27 fittedfor universalv movement in the socket member 28 which 1s connected tothe outer or peripheral portion ofv the inner tube 4 by means of aclamping plate 29 and screw 30.

It will be seen from the foregoing that at each revolution of the wheelthe piston will move the piston head inwardly toward the valve 14. Theair in the cylinder between the piston head and the valve 14 will becompressedand will pass through the valve 20 and through the nipple 5,which the piston 26 loosely fits, into the inner tube. Immediately thatvthe weight is removed .from thepiston 26 it will be restored to normalposition by the inner tube which will expand the casing to its normalposition until again compressed by the weightof the vehicle.

It is of course understood that a device of this character is ineiectiveto start the insulation 0f a completely deflated tire and for thisreason the valve 31 is threaded into the bore 32 formed in the thickenedend 6 of the cylinder 7. This valve is of the ordinary air pump typevalve commonly employed in pneumatic tires and has its oute end closedby the usual dust cap.

What is claimed is In a device of the class described in-combination afelly, a tire, a rim secured to the felly and receiving the tire, saidfelly and rim being formed with an opening, an elongated' nipple, apiston rod projecting through said opening and universally cnnnected inthe tire, a clamping member engaging said threaded nipple at one end forjamming the -base of said tire against said rim, a packing nut of agreater diameter thansaid nipple surrounding the same and engaging saidfelly, said nipple projecting through said felly and rim in spacedrelation thereto and having a bore of greater diameter than said rod,said rod projecting through said nipple, a piston secured to said rod, apump cylinder having a projecting gland collar with an openingcommunicating with the opening in the gland collar, said packing washerAbeing formed with a circular depression in which said collar isreceived, said nipple being threaded into said collar and the opening ofsaidv pump cylinder whereby to jam said collar against said washer,whereby the opening of the nut provides clearance between the Washer 15and nipple.

In testimony whereof I affix my signature in presence of two witnesses.

JOSE FERNANDEZ. Witnesses:

J. G'. FERNANDEZ, E. J. TUCKER.

